Deformation characteristics of deep-buried caverns considering thermal effect
Deformation characteristics of deep-buried caverns considering thermal effect
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发表时间：
2008
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通讯作者：
LI Zhi-jing
中科院分区：
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作者：
LI Zhi-jing
在一系列简化假设的基础上，利用热导理论建立了深埋洞室围岩的稳定温度场模型。得到了温度应力与围岩初始应力耦合作用下深埋洞室围岩应力场的解析解，并讨论了温度对深埋洞室围岩稳定性的影响。
Taking the surrounding rock of deep-buried caverns at the Jinping Second Class Waterpower Station as an example,uniaxial compression tests are performed to study the influence of temperature on the Poisson ratio and elastic modulus under different temperatures.Based on a series of simplifying assumptions,a stable temperature field model for surrounding rock of deep-buried caverns is established with thermal conductance theory.The analytical solution of the stress field for surrounding rock of deep-buried caverns is obtained under coupled action of temperature stress and initial rock stress,then,the influence of temperature on the stability of surrounding rock of deep-buried caverns is discussed.The formulas proposed in this paper can be used to evaluate the stability of surrounding rock of deep-buried caverns at the Jinping Second Class Waterpower Station under high temperature.